Histamine is a chemical the immune system releases in response to allergens, triggering an allergic reaction. Many foods also contain histamine, which is broken down by an enzyme in the gut. Some ...

Histamine is a natural chemical that helps your cells communicate. It plays a few important roles in your body, including managing your sleep cycle and supporting your brain function. But it is best ...

If you've ever eaten certain foods and suddenly experienced headaches, hives, stomach cramps, or a racing heart, the culprit may not always be an allergy, it could be histamine intolerance. While ...

Diamine oxidase (DAO) is a digestive enzyme that rids your body of histamine. Histamine is a signal protein important for digestion, allergic response, immunity, and more. Experts don't agree, but ...